Abstract: A waste liquid receptacle includes first and second cover members for covering first and second openings, respectively. The first cover member is made of a material that is configured to: (i) be plastically deformed upward by a first suction force in a state where a second negative pressure is generated in an upper space; and (ii) plastically deform downward by a depressing force against the first cover member downward in a state where an openable and closable lid is open and the second negative pressure is released. The second cover member is made of a material that is configured: (i) not to be plastically deformed by a second suction force in a state where a first negative pressure is generated in a waste liquid receipt space; and (ii) to be broken without being plastically deformed when a depressing force is applied to the first cover member.

Abstract: A negative pressure is generated in an upper space of a canister due to a suction force of a suction source and, then, a negative pressure is generated in a waste liquid receiving space of a cylindrical body in response to the generation of the negative pressure in the upper space . At this stage of the operation, a first covering member that covers a first opening that opens facing the upper space in a waste liquid treating agent storing portion plastically deforms upward by a suction force caused by a negative pressure in the upper space. On the other hand, when a depressing force that pushes the first covering member downward is applied to the first covering member in a state where an opening and closing lid of the canister is opened so that a negative pressure in the upper space is released, the depressing force is transmitted to a second covering member so that the second covering member is broken.

Abstract: One aspect of the present invention relates to a waste liquid treatment composition for treating a waste liquid containing a body fluid to separate the waste liquid into a supernatant and an aggregate in a container. The waste liquid treatment composition comprises: a solid flocculant having at least one group selected from the group consisting of an OH group, an NH group, and an FH group; and a solid compound having at least one group selected from the group consisting of an OH group, an NH group, and an FH group.

Abstract: Provided is a connection member which is not limited by the material, the tube thickness, the tube diameter or the like of a suction tube and a discharge tube to be connected to a pump, and can eliminate troubles in the tube attachment. A connection member includes: a pump attachment part; a tube connecting part; and a flow passage defining part. At least a portion of each of the suction passage section and the discharge passage section of the flow passage defining part includes membranes deformable due to pressures of the liquid flowing in the suction passage section and the discharge passage section. The flow passage defining part has a shape allowing the flow passage defining part to be attached in an arrangement that the membranes face sensors for detecting a flow state of the liquid flowing in the suction passage section and the discharge passage section by deformation of the membranes.

Abstract: The pump unit comprises a pump including a piezoelectric element and a discharge mechanism for discharging fluid according to operation of the piezoelectric element, and a valve mechanism attached to the pump. The discharge mechanism and the valve mechanism are separately formed by joining a plurality of metal layer pieces stacked in a predetermined stacking direction by diffusion welding, and are secured to each other by diffusion welding.

Abstract: A storage container includes a storing section including a storage space and an inflow port, and a water sealing section. The storing section includes an inflow section connectable to a tube and a volume changing section capable of changing the volume of the storage space. The volume changing section is deformed to increase the volume of the storage space when pressure in the storage space is about to rise to be equal to or higher than a reference pressure set in advance and is deformed to reduce the volume of the storage space when the pressure in the storage space is about to drop to be lower than the reference pressure.

Abstract: The pump unit comprises a pump including a piezoelectric element and a discharge mechanism for discharging fluid according to operation of the piezoelectric element, and a valve mechanism attached to the pump. The discharge mechanism and the valve mechanism are separately formed by joining a plurality of metal layer pieces stacked in a predetermined stacking direction by diffusion welding, and are secured to each other by diffusion welding.

Abstract: A storage container includes a storing section including a storage space and an inflow port, and a water sealing section. The storing section includes an inflow section connectable to a tube and a volume changing section capable of changing the volume of the storage space. The volume changing section is deformed to increase the volume of the storage space when pressure in the storage space is about to rise to be equal to or higher than a reference pressure set in advance and is deformed to reduce the volume of the storage space when the pressure in the storage space is about to drop to be lower than the reference pressure.

Abstract: Provided is a injection equipment capable of alleviating the force required of a user to inject a medical liquid. A housing chamber S1 for extrusion and a housing chamber S2 for injection are mutually connected so that, when one of the chambers S1, S2 expands, the other one of the chambers contracts. As a result of switching a switching valve 9 to an open position in a state where at least a predetermined amount of the medical liquid is filled in the housing chamber S2, the housing chamber S2 for injection is contracted based on the expansion of the housing chamber S1 for extrusion according to the discharge pressure of the medical liquid pump 2 so as to deliver a predetermined amount of medical liquid.

Abstract: Provided is a injection equipment capable of alleviating the force required of a user to inject a medical liquid. A housing chamber S1 for extrusion and a housing chamber S2 for injection are mutually connected so that, when one of the chambers S1, S2 expands, the other one of the chambers contracts. As a result of switching a switching valve 9 to an open position in a state where at least a predetermined amount of the medical liquid is filled in the housing chamber S2, the housing chamber S2 for injection is contracted based on the expansion of the housing chamber S1 for extrusion according to the discharge pressure of the medical liquid pump 2 so as to deliver a predetermined amount of medical liquid.